Acetylene-burner.



UN TED STATES Patented June:30, 1903.

PATENT OFFICE.

HENRY E. SHAFFER, OF ROCHESTER, NElV YORK.

AC ETYLEN E-BU RN ER.

SPECIFICATION forming part of Letters Patent No. 732,125, dated June 30, 1903. Application filed October 11, 1902. Serial No. 126,922. (No model.)

To all whont it may concern.-

Be it known that 1, HENRY E. SHAFFER, a citizen of the United States, residing at Rochester, in the countyof Monroe, in the State of New York, have invented an Improvement in Acetylene-Burners, of which the following is a specification,.reference being had to the accompanying drawings.

My invention relates to an improvement in the construction of burners for acetylene gas, which improvement is fully described and illustrated in the following specification and the accompanying drawings, the novel fea tures thereof being specified in the claim anneXed to the said specification.

In the accompanying drawings, Figure 1 is a side elevation. Fig. 2 is a plan view. Fig. 3 is a section on the line 3 3, Fig. 1. Fig. 4 is a longitudinal section of one of the jettubes. Fig. 5 represents a modification.

My improved acetylene-burner consists, essentially, of the two divergent jet-tubes A A, provided with suitable delivery-orifices and having a circular slot B cut longitudinally, through which air is supplied to mix with the escaping gas. In Fig. 1 the jet-tubes are represented as inserted in a suitably shaped block 0, mounted on the metallic tube D, and in Fig. 5 they are mounted on a tube E, having divergent sockets.

F is the gas-s11 pply passage in the jet-tubes, H the gas-delivery orifice, and I the larger orifice through which the gas mixed With air emerges.

The jet-tubes are formed of any suitable refractory material. The circular slot B is cut by a suitable saw,which at the same time shapes the body of the jet-tube. As indicated in Fig. 4, the slot 13 is open at the lower or inner end and also at the sides, so that not only is the access of air permitted, but any dust or other similar substance will fall out of the slot in all downward directions, such action being facilitated by the curved shape of the lower surface of the slot, and thereby the clogging or obstruction of the small gasorifice is prevented. That portion of the jettube lying above the slot and containing the opening I is entirely supported from its upper or outer end.

My improved acetylene-burner is specially adapted for use in railroad-cars or similar places where the atmosphere is usually charged with dust or fine particles of other materials, since the downward inclination of the slot and the fact that it is entirely open at the lower end and along the sides permits the escape of any fine substances. They will fall out of the slot, not finding lodgment on the inclined and curved surface above the body of the jet-tube. By making the portion of the jet-tube above the body narrow or of a width not greater than the diameter of the body I reduce the widthof the slot, which also facilitates the escape of fine particles. It will also be understood that while my improved burner as shown is made in one piece it may be made in two or more, the curved plate above the body being attached in any suitable way.

Ifind that by this construction two things essential for acetylene-burners are accomplished better than in any previous burner-- ridding the burner of any dust which may enter through the discharge gas-orifice and the keeping the included circular flange above the body cool by the constant supply of fresh unheated air, which is drawn up to mix with the gas. The said flange being supported at its upper end only receives little heat by conduction and is effectually cooled by the air surrounding it on all sides except its upper end.

I claim- An acetylene burner embodying an inclined jet-tube having a cylindrical exterior surface with a gas-orifice on the upper side, and a hood connected at the upper end with and conforming to the curvature of the tube on the upper side and forming a curved airon mixing passage open at the lower end and along both sides,whereby the deposit and accumulation of'dust is prevented; substantially as described.

HENRY E. SHAFFER.

Witnesses:

GEO. B. SELDEN, Y O. G. CRANNELL. 

